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Technical Support
Started by tonypags314 at 12-21-2005 17:32. Topic has 5 replies.
  
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 12-21-2005, 17:32
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tonypags314
Joined on 11-22-2005
Posts 6
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the new version will include shortcut and hardlink creation to replace deleted files. GREAT! what the eff is a hardlink? i googled it and got a bunch of Unix-related info. one microsoft link explains what it is... kind of. it gave me sample syntax:
fsutil hardlink create NewFilename ExistingFilename
what do these options refer to?
How do you go about creating hard links manually in windows xp? server 2000? server 2003?
is there a GUI interface? or cmd only.
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12-22-2005, 3:32
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alan
Joined on 08-10-2005
Hong Kong
Posts 120
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MS's definition of hard link: "A hard link is an NTFS-based link to a given file. When you create a hard link to a file on an NTFS volume, NTFS adds a directory entry for the hard link without duplicating the original file." Unlike shortcut, when file moved /deleted, hard link still work. Hard links are available on NTFS volumes, so you can use in Windows ME, 2000, XP and 2003.
Hard link can be useful to "remove" duplicate system files e.g. DLL safely as the same time recover valuabel disk space.
We should make NoClone to replace duplicates with hard link a automatic process.
As recommended by a NoClone user, you can use these shell extension hard link tool beside the command-line tool:
http://www.elsdoerfer.info/ntfslink/
http://hermann.schinagl.tripod.com/nt/hardlinkshellext/hardlinkshellext.html
NoClone Author
Reasonable Software House
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06-30-2006, 13:12
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alan
Joined on 08-10-2005
Hong Kong
Posts 120
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03-15-2007, 19:03
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piercepresley
Joined on 03-15-2007
Posts 1
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While I think I get hard links, I don't understand how the linked file can be deleted (as opposed to put into the recycle bin) and still work.
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04-14-2007, 20:36
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lazzeroooni
Joined on 04-14-2007
Posts 2
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I don't think you quite get the idea, as I understand it. If you use Windows, think of the link as a shortcut - you can replace duplicates of a file with shortcuts pointing to the single remaining instance of it. In the case of large files this could save a good deal of space.
Without knowing more details about it, the danger would perhaps be removing the application that installed the single file you're linking to, making the remaining hard links useless. Unless, obviously, the system is such that it recognizes the existence of hard links pointing to that file, and replaces one of them with the file itself. Otherwise you'd need to be very careful in replacing duplicate files with hard links to ensure you don't encounter that situation.
To answer your question, you're right, you can't replace every instance of a file with hard links - they would have nothing to point to. You would always need to keep one copy of the file.
If you happen to have a few applications using (locally) the same data file, you could save space on the disk and keep the functionality of all the programs. In practice it probably doesn't happen all that often for most people.
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05-08-2007, 14:09
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kb9nvh
Joined on 05-08-2007
Posts 17
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Ok, now i've used my version of NOclone to replace all duplicate files with hardlinks. my understanding is that each hardlink is equal in every way to any other. If you delete one hard link the file remains until the last hardlink is deleted.
I would like to be able to go into a subdirectory now and delete all the hardlinks there unless its the last and only hardlink. In that case I want it to remain. Is there a way to do this in noclone or is the functinality something that might be easy to implement?
thanks
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Support Forum » NoClone Support... » Technical Suppo... » hard what?
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